Provided below are ELISA kits targeting protein phosphatase 3 regulatory subunit B, alpha, a human protein encoded by PPP3R1. This protein is 170 amino acids long, with a mass of 19.3 kDa, and is a member of the Calcineurin regulatory subunit family. This is reported to be a cytoplasmic and membrane protein. Other alias names for this protein include: calcineurin B type I (19kDa), protein phosphatase 2B regulatory subunit B alpha, protein phosphatase 3 (formerly 2B) regulatory subunit B 19kDa alpha isoform (calcineurin B type I), and protein phosphatase 3 (formerly 2B) regulatory subunit B alpha isoform.